Across
- 3. they are made to latch on to pathogens and destroy them
- 6. they circulate in your blood
- 8. it filters blood and stores blood cells
- 9. there are 4 kinds: virus,fungi,bacteria and parasites
Down
- 1. they produce blood cells
- 2. they are a cell that can digest pathogens
- 4. there are three kinds of it
- 5. they give you a little of the virus to train your immune system to make a antibodies for it
- 7. attacks white blood cells directly to waken the immune system